/*
 * Copyright (C) 2012 rothens
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package rpg.gfx;

/**
 *
 * @author rothens
 */
public class DayNightEffect extends OverlayEffect {
	
	public boolean darken = true;
	//public static final int DAY_LENGTH = 
	public int alpha = 0;
	public int color = 0;
	
	public DayNightEffect(int width, int height, int color){
		super(width, height,0,0);
		this.color = color;
	}

	@Override
	public boolean tick() {
		render();
		if(darken){
			alpha++;
			if(alpha >=255){
				alpha = 255;
				darken = false;
			}
		} else {
			alpha--;
			if(alpha <=0){
				alpha = 0;
				darken = true;
			}
		}
		return true;
	}
	
	public void render(){
		for(int i = 0; i < pixels.length; ++i){
			pixels[i] = ((alpha & 255) << 24) | color;
		}
	}
	
	
	
}
